how do I connect to MySql without password?

[sudheshna aaa]

Team,

I have given a password to root user. But I want to connect to the databases in the MySql without password during development. How do I do that? I am asking this question because I am having the following problem when I tried to connect thru php :

Warning: mysql_connect(): Access denied for user 'root'@'localhost' (using password: NO) in C:\Program Files\Apache Group\Apache\htdocs\testmysql.php on line 5
connect error: Access denied for user 'root'@'localhost' (using password: NO)

My php code:
mysql_connect("localhost", "root") or die("connect error: ".mysql_error ());

Thank you very much for your help.